Aloha from the islands guys!
I recently decided to splurge on my 2011 GTI and put a few go fast parts into it over the last couple months and topped it off with a couple of United Motorsports tunes (ECU & TCU). I've done the recommended spark plug re-gapping and changed out the coil packs, but I'm wondering if I should change my oil type or brand at all. I've always used Mobile 1 0w-40 since day one but now that she has 40k miles and a bunch of upgrades with higher boost.
My question is: With higher boost, should I run a higher viscosity oil? What is your experience with your oil choice when running higher boost?